1. Vocabulary: Nuclear energy: the energy in the nucleus of an atom that is released when atoms join (fusion) or split(fission). Solar (EM) energy: The energy the earth receives from the sun, primarily as visible light used by plants in photosynthesis. Big Idea: How energy flows through an ecosystem Daily target: I can trace the flow of energy through the energy pyramid Homework: Good Buddies Web Quest (DUE Friday) Entry Task : Notes, Information, work and homework discussion. Conclusion: What is the loss of energy multiple for each level of the energy pyramid? Plan for Today: Food Chain Probe Energy pyramid slides (NOTES) Wednesday, October 21 st

2. Food Chains and Food Webs- Only one dimensional Prickly Pear Cactus Producer Woodrat First-level Consumer Weasel Second-level Consumer Bobcat Third-level Consumer

3. Energy Pyramids  An energy pyramid is a diagram that shows how much energy is at each step of the food chain.  A 3d food chain.  Shows how many organisms at each step of food chain  Where are there more organisms? Why?

4. Bottom Level Producers.  Sunlight is the main source of energy for most life on earth.  These are Organisms that can make glucose during photosynthesis.(energy from sunlight)  Producers use most of the energy they make for themselves.

5. 1 st level or Primary Consumers  These are organisms that cannot make their own energy.  They are herbivores (plant-eaters)  They eat producers to get energy  This energy is available for another consumer (predator).

6. 2 nd level consumers Secondary consumer  A consumer that eats another consumer for energy Is called a  A consumer that eats another consumer for energy Is called a secondary consumer May be a carnivore, omnivore, predator, or a scavenger  May be a carnivore, omnivore, predator, or a scavenger  Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer.

7. 3 rd level consumers Tertiary Consumer  A consumer that eats a consumer that already ate a consumer Is called a tertiary consumer  May be a carnivore, omnivore, predator, or a scavenger  Someof the energy is lost as heat, but some energy is stored.  Some of the energy is lost as heat, but some energy is stored.

8. What is happening to energy?

9. Energy Pyramid Fig. 4–19 In nature, ecological efficiency varies from 5% to 20% energy available between successive trophic levels (95% to 80% loss). About 10% efficiency is a general rule.

10. What does Bill Nye the Science Guy have to say about it?

11. How big can the pyramid get?  Why is the third level consumer usually the top of the food chain?  Do you think its common to have 4 th level consumers?  Why is it unlikely to have 4 th level consumers?  Why is it even more unlikely to have a 5 th and 6 th level?